New bra

Shahalie • Married to the love of my life, my partner in crime, my rock and my glue. We got married 7.22.14. Have a beautiful little girl 11/12/16. Currently trying for a a sibling!
When should a female get fitted for a new bra? I'm almost 10 weeks. 1st pregnancy. I feel as if I'm spilling out of my bras. About when do breast slow the growing? How many times would or should a women get fitted for bras nursing and maternity before giving labor? Just curious.